Item #: 97018915Brand: HertelModel #: Features and Benefits Self-centering scroll chucks are designed with jaws on a scroll which open and close with a wrench that is turned on a pinion. They accurately self-center on the workpiece as the jaws close. Cast iron also called semi-steel is the industry standard for chuck body material. Product Specifications Manual Lathe Chucks; Chuck Type: Self-Centering ; Nominal Chuck Size: 6 ; Number of Jaws: 3 ; Mount: Plain Back ; Through-Hole Diameter (Decimal Inch): 1.1635 ; Body Material: Cast Iron (Semi-Steel) Chuck Type Self-Centering Nominal Chuck Size 6 Number of Jaws 3 Mount Plain Back Through-Hole Diameter (Decimal Inch) 1.1635 Body Material Cast Iron (Semi-Steel) Reversible Jaws Reversible Jaws Chuck Diameter (Inch) 6 Minimum Jaw Capacity (Inch) 1/8 Maximum Jaw Capacity (Inch) 6-5/16 Jaw Height (Inch) 1-11/16 Adjustable No Axial Runout (Decimal Inch) 0.0008 Radial Runout (Decimal Inch) 0.0012 Body Length (Inch) 2-17/32 Maximum RPM 3000